facebook/pyrefly#4439

Author: cmp0xff

pandas-stubs/_libs/tslibs/offsets.pyi

@@ -19,6 +19,7 @@ from typing_extensions import override
 
 from pandas._libs.tslibs.timestamps import Timestamp
 from pandas._typing import (
+    Frequency,
     ShapeT,
     np_ndarray_object,
 )
@@ -108,6 +109,11 @@ class BaseOffset:
 
 class SingleConstructorOffset(BaseOffset): ...
 
+@overload
+def to_offset(freq: None, is_period: bool = False) -> None: ...
+@overload
+def to_offset(freq: Frequency | timedelta, is_period: bool = False) -> BaseOffset: ...
+
 class Tick(SingleConstructorOffset):
     def __init__(self, n: int = ..., normalize: bool = ...) -> None: ...
     @property

pandas-stubs/tseries/frequencies.pyi

@@ -1,18 +1,7 @@
-from datetime import timedelta
-from typing import overload
+from pandas.core.indexes.datetimes import DatetimeIndex
+from pandas.core.indexes.timedeltas import TimedeltaIndex
+from pandas.core.series import Series
 
-from pandas import (
-    DatetimeIndex,
-    Series,
-    TimedeltaIndex,
-)
+from pandas._libs.tslibs.offsets import to_offset as to_offset
 
-from pandas._typing import Frequency
-
-from pandas.tseries.offsets import BaseOffset
-
-@overload
-def to_offset(freq: None, is_period: bool = False) -> None: ...
-@overload
-def to_offset(freq: Frequency | timedelta, is_period: bool = False) -> BaseOffset: ...
 def infer_freq(index: Series | DatetimeIndex | TimedeltaIndex) -> str | None: ...

pyproject.toml

@@ -344,8 +344,11 @@ python-version = "3.11"
 explicit-any = false  # We do use implicit Any
 implicit-any-type-argument = false  # We do use implicit Any
 untyped-import = false  # Import discovery
+unused-call-result = false  # results of check(...) are never used
 # TODO: remove when facebook/pyrefly#4427 is resolved
 unused-ignore = false
+# TODO: remove when facebook/pyrefly#4439 is resolved
+missing-source = false
 
 [tool.ty.environment]
 python-platform = "all"

tests/frame/test_frame.py

@@ -1,4 +1,3 @@
-# pyrefly: ignore-errors[implicit-any-lambda]
 from __future__ import annotations
 
 from collections import (
@@ -309,7 +308,10 @@ def test_assign() -> None:
     df = pd.DataFrame({"a": [1, 2, 3], 1: [4, 5, 6]})
 
     my_unnamed_func = (  # pyright: ignore[reportUnknownVariableType]
-        lambda df: df["a"] * 2  # pyright: ignore[reportUnknownLambdaType]
+        lambda df: df[  # pyright: ignore[reportUnknownLambdaType] # pyrefly: ignore[implicit-any-lambda]
+            "a"
+        ]
+        * 2
     )
 
     def my_named_func_1(df: pd.DataFrame) -> pd.Series[str]:

tests/test_typing.py

@@ -42,8 +42,8 @@ def _to_type(t: Any) -> type:
     if isinstance(t, ExtensionDtype):
         return type(t)
     if issubclass(type(t), np.dtype):
-        return t.type  # type: ignore[no-any-return]
-    return t  # type: ignore[no-any-return]
+        return t.type  # type: ignore[no-any-return] # pyrefly: ignore[no-any-return-explicit]
+    return t  # type: ignore[no-any-return] # pyrefly: ignore[no-any-return-explicit]
 
 
 @pytest.mark.parametrize(("dtype_arg", "alias_map"), DTYPE_ARG_ALIAS_MAPS.items())